keyestudio PIR Motion Sensor for Arduino, Pyroelectric IR Motion Sensor for Human Body Motion Pyroelectric IR motion sensor allows you to sense motion and output signals , and widely be applied to detect whether a human or aniamal has moved in or out of the sensors range Compare with Conventional pyroelectric infrared sensors, keyestudio PIR sensor has smaller size, higher reliability, lower power consumption and simpler peripheral circuit This new pyroelectric infrared motion sensor is specially designed for Arduino, we offer vedio, Connection Diagram and simple code help to use Has CE and FCC certification and made function,voltage, current testing before packaging, it is really excellent and safe For many basic projects or products that need to detect when a person has left or entered the area, or has approached, our PIR sensors are great